Foundation and attic ventilator



Sept- 11, 1 34- c. e. MQGILVRAY FOUNDATION AND ATTIC VENTI LATOR 2 Sheets-Sheet 1 Filed Oct. 12. 1933 Sept. 11, 1934- c. G. 'M GILVRAY FOUNDATION AND ATTIC VENTILATOR Filed Oct. 12', 1933 2 Sheets-Sheet 2 Invenior Patented Sept. 11, 1934 FOUNDATION AND ATTIC VENTILATOR Christopher G. McGilvray, Tulsa, Okla. Application October 12, 1933, Serial No. 693,345

1 Claim.

This invention relates to an improved ventilator structure for incorporation in building and construction walls and it has more'particular reference to a type or form of ventilator which is particularly adapted for foundation and attic insulation.

In order to promote health and well being of individuals occupying buildings and houses, I have discovered what I believe to be the need for a simple and economical ventilator which may be installed in a foundation, for example, to ventilate the space between the lower structure of a house and the ground to dispel musty air and eradicate termites and other pests and insects.

In reducing the preferred embodiment of the invention to actual practice, I have adopted and utilized a frame including a duplex grille or grid assembly, together with a pair of interiorly located imperforate cover plates for the grille, said cover plates being adjustably mounted on the frame structure so that they can be effectively closed to prevent circulation of air or swung to open position to deflect and promote adequate circulation of air for ventilating purposes.

Other features and advantages will become more readily apparent from the following description and drawings.

In the drawings:-

Figure 1 is an inside elevational view of the arrangement, showing the cover plates in closed positions.

Figure 2 is an exterior or outside view of the arrangement seen in Figure 1.

Figure 3 is a view in section and elevation, disclosing the assemblage and showing the cover plates swung to open air circulating positions in full lines and occupying closed positions in dotted lines.

In the drawings, in Figure 3 for example, the building wall is differentiated by the letter A and the window opening by the letter B. It is in the opening B that the entire device, as a unit, is installed or mounted. As before implied, it comprises a grille unit 4, here shown as comprising a suitable marginal metallic frame 5 centrally divided into upper and lower sights, each covered with an open-work grid or screen 6. A cover plate is provided for each grid and the cover plates are the same in construction and a description of one will suffice for both. Each cover plate is denoted by the numeral '7 and it comprises a substantially rectangular pan-shaped closure of imperforate design, the

depth accommodate the expanding and linkage. A pair of hinge and supporting links 8 is provided and pivotally connected at the outer ends, as at 9, to the marginal rim of the pan-like cover. The inner ends are pivotally attached, as at 10, to the grille frame. The numerals 11 designate arcuate slotted stay links, each link being pivotally attached at its outer end, as at 12, to the cover and the inner end thereof having slidable engagement with a screw threaded stud carrying a thumb nut 13. The stay link is projectable through one of the openings in the mesh of the screen and, therefore, permitted to occupy either the full or dotted line position shown in Figure 3. By attaching the stay links 11 to the lower portion of the cover, it moves the cover down in the proper arc to efiective closed position. They also operate in unison with the hinge or supporting links 8. The link 8 is merely a straight link and somewhat shorter than the curved link 11. By properly proportioning and attaching the two pairs of links with respect to the cover, when the'cover is in open position, it occupies an angular position and when the two cover plates are swung out, they assume outwardly converging spaced relationship to function as deflectors. Thus the air is permitted to circulate freely when the covers are open and when the covers are closed, they afford the requisite tight closing action for cold and inclement weather.

It may be added that the numerals 14 merely designate handles or finger grips which can be made sufiiciently large to facilitate gripping or a can be made in the form of small hooks so that they can be conveniently operated with a reach rod or similar implement (not shown). As before stated, the ventilator is usable in an attic as well as in cellar construction and means must,

therefore, be provided for convenient operation from a remote point.

It is within the conception of the invention to make the structure of a double or duplex type of the pan being such that it serves to I contracting or of a single type, and the following claim is to be interpreted accordingly.

It is thought that the description, taken in connection with the drawings, will enable a clear understanding of the invention to be had.

Therefore, a more lengthy description is thought unnecessary.

While the preferred embodiment of the invention has been shown and described, it is to be understood that minor changes coming within the field of invention below the horizontal center thereof, arcuateshaped links having longitudinally extending slots therein for adjustably connecting the plates to the frame, screws passing through the slots of said links into the frame, the slotted links which are connected with the upper plate being connected to the lower end of said plate and the slotted links which are connected with the lower plate being connected to'theupper end of said plate.

CHRISTOPHER C. McGILVRAY. 

